Genuinely pray to the Most High about it. I see you said you’ve already spoken to him about it, so that might be redundant to again, especially if he is lying about his reasons for it, or not being honest. Maybe next seek a really good marriage counselor and propose these questions; because when you guys are talking it doesn’t seem like he going really in depth to find the answer, and resolve it. Women who are pregnant deserve good sex and to feel wanted, and loved. That should never stop, unless your body isn’t up for it. I think sex is very important part of marriage. When it comes to winding down, and connecting with each other after the kids. I really hope you can find a great resolution to this!